Never owned a dually much less one that weighs as much as an Interstate. Currently parked at House. Is it OK to drive at least 20 miles on just the outer wheel? Closest tire place....

No! The flat inner tire will shred itself and may do some damage to the wheel well. Not to mention that the outer wheel will be seriously overloadedó by almost two tons. It will blow out as well in very short order and then you'll have TWO flats.

Not to mention that the outer wheel will be seriously overloadedó by almost two tons.

Correctionó the outside tire would be overloaded by almost one ton, not two tons. The tire would have a two-ton load on it instead of its usual one-ton load. But everything else about my response remains unchanged.

That's what happens when I start posting before my morning dose of caffeine.

Never owned a dually much less one that weighs as much as an Interstate. Currently parked at House. Is it OK to drive at least 20 miles on just the outer wheel? Closest tire place....

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You need to update your profile so people know what you have. If it is a new Interstate, it should come with emergency roadside assistance. Call the number, and have somebody come to you and take care of the problem.

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Terry

You need to update your profile so people know what you have. If it is a new Interstate, it should come with emergency roadside assistance. Call the number, and have somebody come to you and take care of the problem.

Yes do as overlander63 suggests! That's what I did when I discovered an inner dual flat at a rest stop on a trip through Arkansas. Coach-Net got someone to the rest stop in the middle of nowhere to change the tire for me. I drove about 100 mile that morning before discovering the flat. I was lucky - no damage to the van.

Just for arguments sake, I do believe with a properly inflated outside rear tire, that you would make it 20 miles easy. Not sure what the condition of your inner tire would be afterwards, but it would probably be just fine too.

Just for arguments sake, I do believe with a properly inflated outside rear tire, that you would make it 20 miles easy. Not sure what the condition of your inner tire would be afterwards, but it would probably be just fine too.

I would agree if stuck on a roadside and you need to get to safe place. But OP said they were parked at home. In that case I'd use the provided Coach-Net assistance. Driving with one dual flat is just a risk you may need to take sometimes.
One company Advanced RV once recommended driving with a single dual on a Sprinter since they didn't include a spare. After one of their owners, who I know, had a flat on a front tire and the roadside assistance company would not move one of the rear duals to front. So he was stuck until he could get a new tire.

Yes do as overlander63 suggests! That's what I did when I discovered an inner dual flat at a rest stop on a trip through Arkansas. Coach-Net got someone to the rest stop in the middle of nowhere to change the tire for me. I drove about 100 mile that morning before discovering the flat. I was lucky - no damage to the van.

Maybe no damage to the coach but what about the damage to the outer dual when you ran it at 100% overload?
It probably should be replaced.

This is a great example of why TPMS are good insurance and learning you have a tire loosing air can allow you to stop before you destroy one tire and damage its mate.